Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon, showing my new design;

FIG. 2 is a front view of a display screen or portion thereof with icon showing a second embodiment of the new design; and,

FIG. 3 is a front view of a display screen or portion thereof with icon showing a third embodiment of the new design.

The dash-dot broken line illustrated in the figures is included for the purpose of showing a display screen or portion thereof and forms no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 